I am in the market for a mower to cut my 1 acre residence. I want a machine that will give a quality cut and provide years of productivity. About 1/4 of my yard has a large hill. I have numerous "mulched" trees and beds to cut around. Would I be better off with a commercial type walkbehind "exmark metro/viking" or a small rider- Hustler Fastrack? Also what would be the best size deck to allow for close trimming? I also would like to bag about 1/2 of my lot on occasion. Any feedback would be greatly appreciated.